One of the bloddiest battles in the history of American prisons occurred at Alcatraz in May 1946, when prisoners staged a breakout, obtaining guns from the gun gallery and taking nine guards hostage. The escape attempt was the cumination of months of methodical planning. But, when a last-minute glitch foiled their escape, inmates shot the hostages in effort to leave no witnesses. Before order was restored, thousands of rounds were fired by federal...